Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

FCOM NG System Description > 15. Warning Systems > Flashcards

15. Warning Systems Flashcards

1
Q

PSEU Light

A
  • Also illuminates for overwing exit flight lock fails to disengage when commanded,
  • Inhibited from Thrust Lever advance for T/O until 30s after landing
  • For some aircrafts acts also with “Simple Fault” logic,
  • In this case illuminates after landing, extinguishes after Parking Brake SET or both engines shutdown
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

MACH AIRSPEED AND STALL WARNING TEST Switches Inhibit

A

While airborne

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Landing Gear Warning Cutout Switch

A

Cannot be silenced with Flaps > 10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Current Altitude Alert

A
  • White box shows around current altitude display becomes bold,
  • Between 900-300FT before reaching the selected altitude,
  • The box turns amber and flashes for 300-900FT deviation from the selected altitude
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

BELOW G/S P-INHIBIT Light

A

If pushed below 1000FT RA, inhibits Ground Proximity GLIDESLOPE alert

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

GRD PROX INOP Light

A
  • GPWS computer malfunction or power loss,
  • Invalid signals received from: RA, ADIRU, ILS, IRS, FMC, SMYD computers or EFIS panel
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

TERR INHIBIT Switch

A

Inhibits Look-Ahead terrain alerts and terrain display

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

RUNWAY INOP Light

A
  • RAAS failure,
  • GPS position accuracy is inadequate,
  • The airport is not in the GPWS database,
  • The airport is not in the RAAS RWY database
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Terrain Display Color Codes

A
  • Dotted Green: 2000FT below to 500Ft (250FT with gear down) below the aircraft,
  • Dotted Amber: 500Ft (250FT with gear down) below to 2000FT above the aircraft,
  • Dotted Magenta: No terrain data available,
  • Solid Red: Look-Ahead warning is active,
  • Solid Amber: Look-Ahead caution is active,
  • Solid Green: Highest elevation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Terrain Inhibit Near Airport

A

Within 200/400FT of nearest airport RWY elevation does not show

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Predictive Windshear Auto Pop-up

A
  • Even neither pilot has WXR display selected,
  • In Expanded Modes and Center Map Mode,
  • If TERRAIN selected, WXR replaces it
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Sound Alerts

A
  • Clacker for airspeed,
  • Warning tone for A/P disengagement,
  • Intermittent horn for Takeoff Config and Cabin Altitude,
  • Steady Horn for Landing Gear positions,
  • Warning Bell for Fire
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Warning Light Colors

A
  • RED: Requires immediate attention,
  • AMBER: Requires timely attention,
  • BLUE: System information
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Importance of MASTER CAUTION or FIRE RESET

A

Resets the system for future warnings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

MASTER CAUTION Associated Area

A

Outside the normal field of vision of the flight crew

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Simple Fault

A
  • Single fault in certain redundant systems,
  • Does not illuminate MASTER CAUTION,
  • Stored in the system and illuinate during Recall, extinguishes after RESET
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

MASTER CAUTION Lights and Recall

A

All 12 lights must be illuminated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

MASTER CAUTION OVERHEAD Unusual Lights

A
  • EQUIP COOLING-OFF,
  • EMER EXIT LIGHTS-NOT ARMED
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Takeoff Configuration Warning

A
  • Trailing Edge Flaps not in the range of 1-25,
  • Trailing Edge Flaps are in Skew or Asymmetry or have Uncommanded Motion,
  • Leading Edge Devices not configured for takeoff or have Uncommanded Motion,
  • SPEED BRAKE Lever not in the DOWN position,
  • Spoiler Control Valve is open, providing pressure to Ground Spoiler Interlock Valve,
  • Parking Brake is SET,
  • Stabilizer Trim not set in the takeoff range
20
Q

Landing Gear Horn Activation

A

Flaps Up to Flaps 10:
- Below 800FT, either Thrust Levers between IDLE and 20 degrees,
- OEI Thrust Lever < 34 degrees,
- Can be silenced until 200FT RA

Flaps 15 to 25:
- Either Thrust Lever < 20 degrees (or 34 for OEI),
- Cannot be silenced

Flaps greater than 25:
- Regardless of Thrust Lever position,
- Cannot be silenced

21
Q

PSEU System Monitors

A

Proximity Switch Electronic Unit monitors:
- Takeoff Configuration Warnings,
- Landing Configurations Warnings,
- Landing Gear,
- Air/Ground sensing

22
Q

Stall Warning Purpose

A
  • Natural Stall Warning (buffet) usually occurs at a speed prior to stall,
  • In some configurations the margin between stall and natural stall warning is less than desired,
  • Therefore an artificial Stall Warning Device, a Stick Shaker is used to provide the required warning
23
Q

SMYD and Sources

A

Stall Management and Yaw Damper computers takes data from:
- Alpha Vane AoA outputs,
- ADIRU outputs,
- Anti-ice controls,
- Wing configurations,
- Air/Ground sensing,
- Thrust

24
Q

SMYD Outputs

A
  • Stick Shaker and Pitch Limit Indicator,
  • Airspeed displays,
  • GPWS Windshear detection and alert
25
Q

Altitude Alert Inhibit

A
  • Flaps 25 or greater or,
  • G/S captured
26
Q

GPWS Inputs

A
  • Radio Altitude,
  • Barometric Altitude,
  • Airspeed,
  • Glideslope deviation,
  • Airplane configuration
27
Q

GPWS Alerts

A

Radio Altitude based alerts:
- Excessive Descent Rate,
- Excessive Terrain Closure Rate,
- Altitude Loss after Takeoff or Go-around,
- Unsafe Terrain Clearance when not in the landing configuration,
- Excessive deviation below ILS/GLS Glideslope or the FMC generated flight path angle

Look-Ahead Terrain Alerts:
- In addition to GPWS, EGPWS monitors terrain proximity,
- Using an internal worldwide terrain database

28
Q

Warning Authority

A
  • Actual Windshear warning,
  • GPWS,
  • Predictive Windshear,
  • TCAS
29
Q

Look-Ahead Terrain Alerts

A
  • EGPWS contains detailed terrain data near major airports,
  • And data in lesser detail for areas between airports,
  • Terrain within 200FT of aircraft barometric altitude shows on the ND,
  • Generated from database in the EGPWS computer and correlated to GPS position,
  • Alerts based on aircraft: Position, Barometric Altitude, Vertical Flight Path and Ground Speed
30
Q

GPWS Warnings/Cautions

A
  • TERRAIN TERRAIN/OBSTACLE OBSTACLE, PULL UP: 20-30s to projected impact,
  • CAUTION TERRAIN/OBSTACLE: 40-60s to projected impact,
  • TOO LOW TERRAIN: Descent below unsafe altitude while too far from database airports, may follow DON’T SINK,
  • TERRAIN: Excessive terrain closure rate,
  • PULL UP: Follows SINK RATE and changes to TERRAIN,
  • DON’T SINK: Excessive altitude loss after Takeoff or Go-around,
  • SINK RATE: Excessive descent rate,
  • TOO LOW, FLAPS/GEAR: Unsafe terrain clearance at low speed without correct configuration
31
Q

RAAS Operation Requirements

A
  • Terrain and airport runway database is in the GPWS computer,
  • Aircraft approaching an airport in the RAAS database,
  • GPS and other required signals are available and accuracy meets minimum requirements,
32
Q

RAAS AAL Algorithm

A
  • Numerically subtracts the landing runway touchdown zone elevation in the GPWS,
  • From the pressure altitude of the aircraft
33
Q

“APPROACHING XX” RAAS Advisory

A

Inflight:
- Between 750-300FT AAL and,
- Within 3NM of the approach end of the RWY and,
- Track within 20 degrees of the RWY HDG and,
- Laterally within 200FT of the RWY centerline + RWY width

On the ground:
- Groundspeed < 40KT and,
- Within specific distance from the RWY

34
Q

“APPROACHING SHORT XX” RAAS Advisory

A
  • Same as normal call except for RWY length < 1900m,
  • And shown in amber
35
Q

“ON XX” RAAS Advisory

A
  • On RWY and,
  • Heading within 20 degrees of RWY heading,
  • Heard twice when aircraft along distance change is < 100FT within 180s
36
Q

Unstable Approach RAAS Cautions

A
  • “FLAPS FLAPS”,
  • “TOO HIGH, TOO HIGH”,
  • “TOO FAST, TOO FAST”,
  • “UNSTABLE, UNSTABLE”,
  • “LONG LANDING, LONG LANDING”,
  • “CAUTION TAXIWAY, CAUTION TAXIWAY”
37
Q

GPWS Windshear Alert

A
  • Two tone siren followed by “WINDSHEAR X 3”,
  • Red WINDSHEAR on both Attitude Indicators,
  • Begins at rotation an enabled below 1500FT RA
38
Q

Predictive Windshear Alerts

A
  • All enabled below 1200FT RA,
    -“WINDSHEAR AHEAD”: During Takeoff,
    -“GO AROUND, WINDSHEAR AHEAD”: Within 1.5NM ahead of aircraft during approach,
    -“MONITOR RADAR DISPLAY”: Within 3NM during approach and takeoff,
  • Except MONITOR, Red WINDSHEAR shown on both Attitude Indicators and NDs,
  • For MONITOR RADAR DISPLAY: Windshear symbol and amber WINDSHEAR shown on ND
39
Q

Predictive Windshear Automatic Scan

A
  • Thrust Levers set for takeoff (even engine is off and IRSs not aligned for some aircrafts) or,
  • Inflight below 2300FT (1800FT for some aircraft) RA,
  • Alerts available approximately 12s after scan begins
40
Q

Predictive Windshear Scan Area

A
  • 25 degrees left and right,
  • 3NM long,
  • Warning zone: 0.5NM beam width, Up to 3NM length on the ground and 1.5NM inflight
41
Q

Predictive Windshear Inhibits

A
  • New Cautions inhibited between 80KT and 400FT RA,
  • New Warnings inhibited between 100KT and 50FT RA
42
Q

GPWS RA Callouts

A
  • For some aircraft 500 and 1000 callouts are barometric based,
  • Triggered by the difference between barometric altitude and landing field elevation
43
Q

Smart 500 RA Callout

A
  • Used during non-ILS or non-GLS approach,
  • Also during ILS approach with excessive deviation (2 dots of LOC or G/S),
  • Used when G/S cancel is selected,
  • Used also when Backcourse Approach is detected
44
Q

DH/MDA Callout Source

A

CPTs Minimums selector

45
Q

TCAS General

A
  • Traffic Alert and Collision Avoidance System,
  • No protection against the aircrafts which do not have operating transponders,
  • Identifies 3D airspace around the aircraft,
  • Dimensions based upon closure rate with the conflicting traffic
  • Independent of Ground-based ATC
46
Q

TCAS Advisories

A
  • TA: “TRAFFIC TRAFFIC”, 40s to closest approach point, red square,
  • RA: 25s to closest approach point, amber circle,
  • Proximate traffic: Within 6NM and 1200FT, solid white diamond,
  • Other traffic: Beyond proximate criteria, empty white diamond
47
Q

TCAS Inhibits

A

-“INCREASE DESCENT”: Below 1500FT RA,
-“DESCEND”: Below 1100FT RA,
- RAs inhibited below 1000FT RA, changes to TA ONLY mode,
- All voice advisories inhibited below 500FT RA

FCOM NG System Description (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions